Preformed snack



FIG. 1 is a plan view from above of the preformed snack, showing my new design;

FIG. 2 is a plan view from below thereof;

FIG. 3 is a side view thereof; and,

FIG. 4 is a cross-sectional view thereof taken along section lines IV—IV in FIG. 2. 

The ornamental design for “preformed snack”, as shown and described. 